Battery explosion-proof structure and power battery

The invention discloses a battery explosion-proof structure and a power battery. The explosion-proof structure comprises a first protective layer, a metal layer and a second protective layer which are sequentially stacked, wherein the first protective layer and the second protective layer are polyester material pieces; the metal layer is made of a lithium-containing metal material and is used for being attached to the aluminum cover plate, a diffusion effect is formed between the metal layer and the aluminum cover plate, so that the structural strength of the attaching position of the aluminum cover plate and the metal layer is reduced, and a blasting area is formed; and when the gas pressure in the power battery reaches the opening pressure of the explosion-proof structure, the gas in the power battery breaks through the explosion-proof structure so as to discharge the gas in the power battery. According to the explosion-proof structure, the metal layer is attached to the aluminum cover plate to form a diffu